80 teams, divided into 5 groups of 16 teams each (Seria 1-5) on regional basis.
Each team plays against all the teams from its own group twice - home and away - for a total of 30 games each, over 30 game weeks.

Scoring points:
3 points for a win, 1 point for a draw, 0 points for a loss.

Table order:
1. points won; 2. points in head-to-head matches; 3. goal difference in hth matches; 4. goals scored in hth matches; 5. total goal difference; 6. total goals scored; 7. play-off.

Relegation to the league:
5 teams from Liga II

Promotion from the league:
1 place of each group: promoted to Liga II

Relegation from the league:
worst 12th placed team of all groups: relegated to Liga IV
13-16 place of each group: relegated to Liga IV

Tie-breakers for ranking the 12th placed teams: *
1. points won; 2. games won, 2. total goal difference; 3. total goals scored.
* - taking into account only the matches of each team against the 1st-14th placed teams in its group.

Promotion to the league:
21 teams from Liga IV